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随着城市建设的深入推进和城市化水平的不断提高,人类活动改变了雨水参与水循环的模式,雨水径流也因为地表污染物的增多而受到威胁。自6月30日以来,长江中下游地区出现今年入汛以来的最强降雨过程,不仅导致山洪爆发、水位陡涨等自然灾害,连日的强降雨也导致许多城市出现内涝,情势十分严峻。近年来,城
With the deepening of urban construction and the continuous improvement of urbanization, human activities have changed the mode of rainwater participating in the water cycle. Rainwater runoff is also threatened by the increase of surface pollutants. Since June 30, the strongest rainfall in the middle and lower reaches of the Yangtze River since the flood season this year has not only led to natural disasters such as the flash floods and the sudden rise in water level, but also resulted in severe waterlogging in many cities due to heavy rainfall over several days. In recent years, the city